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A speeder is pulling directly away and increasing his distance from a police car that is moving at 29 meter per second with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 9.00 x 109 Hertz. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 326 Hertz less than the emitted frequency. Obtain the speeder speed with respect to the ground.
The centripetal force on an 820 gram object on the end of a 2.0-m massless string being swung in a horizontal circle is 4.0 N. What is the linear speed of the object?
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
An unknown number of moles of an ideal monoatomic gas expand reversibly from Vi = 1.30 m3 to Vf = 2.20 m3, Find the number of moles of gas
An image of the moon is focused onto a screen using a converginglens of focal length (f= 34.3 cm). What is the diameter of the moon's image
a singly ionized oxygen atom moves at 9000ms in a circular path perpendicular to a 0.85t magnetic field. find the
Why is the human body not an equipotential surface? What is the function of a cell membrane in this respect and what electrical device does it behave like?
the index of refraction for silicate flint glass is 1.66 for violet light that has a wavelength in air equal to 400 nm
q1. a 9.7 v battery is connected to a bulb whose resistance is 1.3. how many electrons leave the battery per minute?q2.
A 17.5 kg cart is moving with a velocity of 7.65 m/s down a level hallway. A constant force of -10.0 N acts on the cart, How far did the cart move while the force acted
What is acceleration due to gravity
Aluminum wire has been utilized to replace copper wire during times of high copper prices. if 20 gauge copper wire has a resistance of33Ω per kilometre of length, decide the diameter of an aluminum wire with similar resistance?
Refer to your DRAFT Hypothesis and Design. Review the "Scientific Method Tutorial" (all six parts) found in "Science Learning Center" in "Course Resources" in the "Course Content" area of our electronic LEO classroom. Did you apply these concep..
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